I use XML :: Simple to parse the XML file, which I then want to use to write the output file in a very specific format. Thus, the output order is important. As far as I understand, when XML is converted to perl hashref, the order is lost (since perl hashes are not ordered). But what about when the array is used by XML :: Simple.
For instance:
<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog>
<cd>
<title>Hide your heart</title>
<artist>Bonnie Tyler</artist>
<price>10.0</price>
</cd>
<cd>
<title>Greatest Hits</title>
<artist>Dolly Parton</artist>
<price>9.99</price>
</cd>
<cd>
<title>Hello</title>
<artist>Say Hello</artist>
<price>0001</price>
</cd>
</catalog>
gives us a data structure resembling:
$VAR1 = {
'cd' => [
{
'artist' => 'Bonnie Tyler',
'price' => '10.0',
'title' => 'Hide your heart'
},
{
'artist' => 'Dolly Parton',
'price' => '9.99',
'title' => 'Greatest Hits'
},
{
'artist' => 'Say Hello',
'price' => '0001',
'title' => 'Hello'
}
]
};
Structures 3 'cd' are inserted into the array, so their order will always be the same as in the input file?
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